Guest guest Posted September 11, 2006 Report Posted September 11, 2006 I just learned that Genova no longer does the plasma cysteine test, only serum cysteine. They claim the results are comparable. Does anyone know enough to say this is truly comparable or not? Obviously serum and plasma are different " stuff " and I don't know if serum results are valid for our purposes. I could not get a very good story about this from Genova and they refused to let me talk to a physician or other technical person who could give me a better explanation. I often suggest this test to people, so I'd like to be sure it is still worthwhile for them to consider it. -- Quote
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